### What problem does this PR solve?
Feat: Files uploaded via the dialog box can be uploaded without binding
to a dataset. #9590
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Delete useless knowledge base, chat, and search files. #10427
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Fix: When I click to interrupt the chat, the page reports an error
#10553
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Fix: Document Previewer is not working #9606
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Feat: Upload files in the chat box #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Send data to compare the performance of different models' answers
#3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
